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As news of the deadly mass shooting at Marjory Stoneman Douglas High School in Parkland, Florida, unfolded last week, Pia Guerra, a 46-year-old Vancouver-based artist, felt helpless. She couldn’t bring herself to go to sleep, so she began to draw.

Police who find suspected drugs during a traffic stop or an arrest usually pause to perform a simple task: They place some of the material in a vial filled with liquid. If the liquid turns a certain color, it’s supposed to confirm the presence of cocaine, heroin or other narcotics.

Doctors in Syria’s rebel-controlled suburbs of Damascus said Wednesday they were unable to keep up with the staggering number of casualties, amid a ferocious bombing campaign by government forces that has targeted hospitals, apartment blocks and other civilian sites, killing and wounding hundreds of people in recent days.

The Supreme Court ruled unanimously Wednesday that whistleblower protections passed by Congress in the wake of the financial crisis of 2008 apply only when those alleging corporate misdeeds bring their information to the government.